Kaibab Limestone in the SP Crater area is nearly horizontal in most areas, and formed a flat-lying surface over which basalt flowed.
Northwest of SP Crater, a linear drainage pattern suggests pre-Quaternary graben-forming faulting of the Kaibab Limestone.(3)

Quaternary/Tertiary basalt flows are well eroded, covered by alluvium, and sparsely vegetated. Individual flows are difficult to
distinguish, and outcrop patterns suggest that most, if not all, parts of these basalt outcrops were deposited by one flow. Correlation
of the different flow deposits is supported by consistent presence of ~ 5% olivine crystals as much as 4 mm in diameter.
Quaternary/Tertiary basalt includes rafted cinder and agglutinate deposits.(4)

SP Crater and the associated flow morphologically dominate the area. The cone is approximately 400 m high and 1000 m in diameter at
the base. The rim of the cone is held up by an agglutinate spatter ring. A flow that emanated from the northern base of the cone flowed
approximately 1500 m to the north before following a more northeasterly trend for another 1000 m [I don't know the correct numbers].
This flow is blocky, non-eroded, and is covered by little vegetation. The SP flow is easily differentiated from the older flows by the
smaller olivine (~ 10%, 1-2 mm maximum diameter), the presence of 1-2% xenocrystic quartz, and a glassy groundmass. Damming
of the lava flow at the approximate location of the northeast turn [I know this, but hardly expected you to recognize the cause] caused
a small breakout of the flow into the topographic depression in the Kaibab limestone.(5)

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1 The title indicates that the study is about geologic history of the area, including limestone and (probably) structure.

2 The introductory sentence tells the reader where the study area is and what the main rock types are.

3 Paragraph on Kaibab Ls gives you the basic information about the limestone that is relevant to an abridged history of the area.

4 If I ran into this paragraph in an abstract, I would head straight into the article to find out more about the eroded surfaces, agglutinated vent
areas, and scoria. The abstract tells me what's there in a nutshell, and leaves the gory details for the main body of the paper. I do NOT
expect you to have recognized rafted cinder/agglutinate deposits!!

5 Just some nuts and bolts things about the SP crater and flow. In the body of the paper one would discuss more details of the mineralogy,
more about the cinders in the cone, etc., etc.